1.The EDFA's working frequency band is at the lowest fiber loss(1525-1565nm).
2.High power amplifier,High energy conversion efficiency. The laser working substance is concentrated in the concentrated part of the optical fiber core, and the signal light and the pump light are also strongest in the paraxial portion, and the light and the substance function sufficiently.
3.Frequency bandwidth. Simultaneous amplification of multiple signals - wavelength division multiplexing.
4.High gain, low noise, large output signal. The gain of optical amplifier is up to 40db. The output power is 14dbm in one-way pump and 17-20dbm in two-way pump. When fully pumped, the noise figure can be as low as 3-4db, and the crosstalk is small.